Symptom-bearing plant material of the Lilliaceae, Ashodelus macrocarpus, was collected July 1991 in Greece. After surface sterilization, small segments of stem, leaf and fruit were plated on Potato Dextrose Agar (PDA, Difco) plates and incubated for 2 days at 26°C. Pure cultures could be obtained from the plates by one additional transfer to PDA plates. The culture was maintained on PDAslants a...

Introducción y objetivos: La contaminación ambiental podría afectar el estado sanitario del arbolado a la biodiversidad de microorganismos. Fraxinus pennsylvanica es uno los árboles más frecuentes en Ciudad Buenos Aires. Los objetivos trabajo fueron: relevar micromicetes presentes corteza madera fresno, determinar si hallados con mayor frecuencia producen enzimas lignocelulolíticas, describir p...

Fungi were isolated in pure cultures from decaying giant sequoias Geneva (Switzerland). Isolates genetically identified by ITS rDNA sequencing. Young sequoia trees artificially infected with a culture of Botryosphaeria parva. Henle-Koch’s Postulates demonstrated that parva was pathogenic to Sequoiadendron giganteum. When analysing the microorganisms associated canker and dieback symptoms (Sequo...

To gain insight into the molecular mechanisms underlying the control of morphogenetic signals by H+ flux during embryogenesis, we tested Fusicoccin-A (FC), a compound produced by the fungus Fusicoccum amygdali Del. In plant cells, FC complexes with 14-3-3 proteins to activate H+ pumping across the plasma membrane. It has long been thought that FC acts on higher plants only; here, we show that e...

There have been several recent reports of Pterocarpus angolensis (kiaat) trees dying in South Africa, Zambia and Zimbabwe, where this tree is used in traditional medicine and is a valuable source of timber for woodcarving and furniture. A survey of material from diseased P. angolensis trees in South Africa yielded isolates of the Botryosphaeriaceae, an important fungal family known to cause a n...